Machine for unhairing fur-skins.



0. DINGFELD,

MACHINE FOR UNHAIRING FUR SKINS.

APPLICATION FILED JAN. l. 1918.

l ,287, 9 1 4, Patented Dec. 1T, 1918.

3 SHEETS-SHEET l.

F/Gl /5 0. DINGFELD.

MACHINE FOR UNHAIRING FUR S KlNS. APPLICATION FILED JAN. 7, |918.'

1,287 914. Patented Dec. 17,1918.

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U. DINGFELD.

MACHINE FOR UNHAIRING FUR SKlNS.

APPLlcATxoN FILED JAN* 1. Isls.

3 SHEETS-SHEET 3.

1,287,914. Patented Dee. 17, 1918.

l mom/Lto@ OSCAR DINGFELD, or BROOKLYN, NEW YORK.

MACHINE FOR UNHAIRING FUR-SKINS.

Specification of Letters Patent.

Patented Dec. 17, 1918.

Application led January 7, 1918. Serial No. 210,761.

To @ZZ whom it may concern:

Be it known that I, OsoAiz DINGFELD, a citizen of the United States, residing at 125 Melrose st., Brooklyn, in the county of Kings and State of New York, have invented a new and useful Machine for Unhairing Fur- Skins, of which the following is a specification. v

My invention relates to improvements in a machine for unhairing fur skins, and it consists in the novel features hereinafter more fully described.

The objects of mv improvement are:

First, t0 reduce the amount of lostl motion of the cutting blades and to counteract or reduce the effect Of the looseness of the joints in the connections of said blades to the inachine.

Second, to provide a means whereby the stubble of the clipped hair should 'be made of a uniform heightor length, instead of making the stubble of the hair on the sides of the skin longer than in the center ofthe skin, as in machines of present design.

Third to provide automatically actuated shields oi' guards for parts of the skin, which it may be desirable to protect from the action of the cutting blades, said shields to be carried bythe inner cutting blade or the carrier of said blade, as hereinafterv described, and the position of said shields to be adjustable.

Fourth, to improve the operation of sundry parts of the machine in generalan'd to have the machine simple durable and inexpensive. l

I attain these objects by the mechanisms j illustrated in the accompanying drawings or by any mechanical equivalent or obvious modification of theA same.

In the drawings Figure 1 is a vertical section on the line A-B of Fig. 2 looking to the left; Fig. 2 is a vertical section on the line C-D of Fig. 1 looking to the right and omitting the stretcher bar or bridge and the brushes, which are shown in Fig. 1; Fig. 3 is a planof my mechanism for making-the stubble of the clipped h'air of uniform length f Fig. i is a front view of the mounting ofthe above mechanism, omitting the combing plates and the means for controlling the same; Fig. 5 'is a section on the line E-F of i Figs. 8 and 4, showing4 also the stretcher bar or bridge of the machine and one of the adjustable shields in position; Fig. 6 is an end nelevation of the connecting rod 40 vofthe to which I secure the pair of guides 12,

which are shown in Figs. 1 and 7 as held at their ends in the sockets 14 of said frame by means of the set-screws 13.- A

Said guides 12 are fitted into a pair of slides or sleeves 15, which are shown in Fig. 2 as situated at the ends of the table or plate 23, which forms a movable support for the inner cutting blade 22.

Said table 23 may be made in one with said slides 15, and it is shown as strengthened by the vertical rib or web 24 on the underside thereof.

Said inner cutting blade 22 may be preferably inclined a few degrees, sloping downwardly to the right in Fig. 1, so' as to permit the cutting edge of the outer cutting blade 21 to pass over it freely.

Each of said slides 15 is shown as carrying bracket 16, which may be made in one therewith, and each of said brackets 16 terminates at its upper end in a bearing 17 for the spindle 18, which is shown as carrying the arms 19 and 19a, which are made in one with the backing plate 2O of the outer cutting blade 21, which may be secured to-said backing 20 in any suitable manner, and

which is thereby adapted to revolve around nected to said spindle 18; the edge of said blade 21, which is adjacent to said arm 19. is the leading edge of said blade: and the edge of said blade 21. which is adjacent to said arm 19a is the follower ledge of the blade.v y

Said inner cutting'blade 22 is shown in Fig. .l in the position as moving toward the stretcher bar 0r bridge 25, which is shown as having the conveyer 26 passing over its tessere crest, with the pelts orskins omitted, and the revolving and rocking brush 27 is shown in its downward phase of motion corresponding to the above position of said blade 22; the revolving` brush 3% is also shown in position n the front side of said bar or bridge 25.

Said brushes 27 and 3d are shown as carried by the spindles 32 and 33 respectively, of which the latter may be supported by the i'raine il or the machine, and the former is carried by the bracket 28, which is shown as pivotally connected to the oscillating link 29 by means oi the pin 30; said link 29 :may

kbe pivotally connected to the iframe of the machine by means of the pin or spindle 3l, andit serves to direct the motion of said bracket 28 and the revolving and rocking brush 27 in the required manner.

The outer blade 2l is shoivn as placed about 90O ahead oi' its correct position corresponding to the position et said blade 22, for the sake or" illustratingthe cuttingl action of the tivo blades, which will actually take place when said blade 22is at or near the upper edgelot` said bar or bridge'. 25, which is shown as placed at a distance 'thereroni, for thesake of clearness.

lt is evident that, by .supporting said blade 2l from brackets, which are made in one with the support of said blade 22, there is only one jointto get loose and al-'lect the correctness of the'spacingotl the cutting edges orn said blades, and thatis the joint of the spindle 1S in the bearings l?, but

. that any looseness of the slides l on the guides l2 will not affect the distance between said blades. lt is also evident that the lsaine result would be attained Whether said blade 2l' revolves on said spindle 1S through a complete circle or onlj,y oscillates through an are off a circle.

The means for actuating said blades and 22 and sundry other operating parts oi the machine are shown in Fig. 7 as iollows:

The spindle 1S carries a sprocket, of which the pitch line is designated as 52, which sprocket is operatively connected by ineans of the chain, the center line of which is designated as 5G, to the sprocket 5l, which is secured to the sha ft 57, which carries the main driving pulley 59, which is adapted to receive poner from a suitable belt; said puller/ 59 carries a crank pin 58, which operates the pair'ot bell crank levers @1 -61a by means of the pair lor connectingrodsf@g said bell crank levers actuate a pair ot rocker arms 63 by means ofthe links Said rocker arms are each pivotallv connected to the frame ll bv means of a stud del, and they 'actuate said pair of sleeves or slides l5 hereinberore described.

To take up the slack of said 4 chain 5U, l provide the idler sprocket 53, oi?

which the spindle 70 is carried by the arm 5d, which is pivot-ally connected to the frame ll by means of the stud 56.

Said sprocket 53 is kept in contact with said chain 50, thereby stretching the same. by means of the spring 55, which is shown as connected at one end thereoli to the pin 68 in said frame l1 and at the other end to the pin 69 in said arm 54C.

My mechanism for makingthe stubble of vthe clipped hair of uniform length is omitted from Figs, l and 2, for the sake of which re Tolves around thevspindle '1S with said blade 2. y

Said bearings 36 are shown as open on the iront of said mounting to allotv .said

plates 38 to pass therethrough and to be in clined in position to said blade 2l in such a manner as ,to tend to raise` the hairs4 of the pelt or skin, which hairs are naturally inclined sidevvise toward the outer edges Vof the skin in order that thesel hairs maybe clipped to 4uniform length. l

The lower edges of said plates are shown in Fig. 5 as rounded oil", so as not to interfere with v'the motion of the other parts of the machine during the revolution ot said blade v2l, andthe lower parts et said plates 38 are shown as extend-ing backivardly under said mounting 35 to Within a very short distance from said-blade 2l.

The number oi said plates-38 may 4be much larger than as shown in lli-g. '3, Where ten plates are shown as consisting of two sets inclined in opposite directions. Y

The extent of the inclination or said plates 3S is controlled by the connecting rods 40, shown as having each an arm 42 at right angles thereto, said arms being adjustably connected to Vthe ends of said Vmounting '35 by means of the long vscrews 43 and the springs 44; said arms 42 are .shown in Fig.

allow for .the componentof the motion of said arms in a direction crossivise 'to said screws 43 when adjustingvthe' position ot said plates 38 by 'means of said connecting rods d@ which are shown as ivotall `con-- nected to said plates by means of the Vsockets ll on said rods l0 Aand the pins 39 on said plates the caps d6 are shown in Fig. 5 as vkeeping .said rods Yi() in place on said plates 38.

snows also one oiivniy shields or o as provided with elongated slots 45 to guards 4:8 as connected to a sliding plate et?, which has a tongue 49 adapted to slide in a corresponding groove on the underside of the inner blade 22, transversely thereto.

The object of said shield 48 is to protect any part of the furskin, which does not have to be unhaired, such as the sides of the skin, from having its fur cutby the blades '21 and 22, or from having portions of wrinkled skin cut or mutilated. Any convenient number of such shields 4:8 may be employed, and their position with relation to any part of the skin or pelt may be adjusted by sliding said plate 47 transversely to said blade 22; said shields may also be removed, if desired.

The forward end of said shield is shown in Fig. 5 as adapted to pass over said conveyer 26 on said bridge 25 slightly below the level of the cutting edge of said blade 22, thereby protecting the hair or fur on any skin or the skin itself from being cut.

Many changes could beinade in my machine for unhairing furskins without departing from the main scope of my invention. I do ynot therefore restrict myself to the details as shown; but I intend to include also all mechanical equivalents and reasonably obvious modifications of the same within the scope of my invention.

What I claim `as my invention, and de sire to secure by Letters Patent is:

1. In a machine for unhairing fur skins a bridge bar forstretching the fur skins thereover, an outer blade and an inner blade, a movable support for said inner blade and af bracket for said outer blade, said bracket being mounted on said support of said inner blade and said support being adapted to have a to and fro motion with relation to said bridge bar.

2. In a machine for unhairing fur skins a bridge bar for stretching the fur skins thereover, an outer blade and an inner blade, a movable support for one of said blades and a bracket for the other .of said blades, said bracket being mounted on said support, and said support being adapted to have a to and fro motion with relation to said bridge bar.

3. In a machine for unhairing fur skins a bridge bar for stretching the fur skins thereover, an outer blade and an inner blade, a movable Suppbrtfor said inner blade and arv bracket for said outer blade, said support with said inner blade being adapted to have a to and fro motion with relation to said bridge bar, said support with said inner blade being stationary with relation to said bracket, and said outer blade being adapted to move in an arc of a circle with relation to said support and said inner blade.

4. In a machine for unhairing fur skins :i bridge bar for stretching the fur skins thereover, an outer blade and an inner blade, ai sliding support for said inner blade and an bracket for said outer blade, said support with said inner blade being adapted to have a reciprocating motion with relation to said bridge bar, said support with said inner blade being stationary with relation to said bracket, and said outer blade being adapted to move in an arc of a circle with relation to said support and said inner blade.

5. In a machine for unhairing` fur skins an inner blade and an outer blade, a bridge bar for stretching the fur skins thereover, thereby causing the coarse hairs of said fur skins tol be raised preliminary to clipping, a means for keeping down the fur et' the skins, thereby eliminating said fur frein the action of the blades, and a means for preventing said raised hairs from being inclined sidewise from the center of the skin. thereby making the stubble of the clipped hair of uniform length across the width of the unhaired skin, said preventing means being adapted to act in conjunction with said outer blade and in advance of the operation thereof.

6. In a machine for unhairing fur skins an inner blade and an outer blade, a bridge bar for stretching the fur skins thereover, thereby causing the coarse hairs of said fur skins to be raised preliminary to clipping, a means for keeping down the fur of the skins thereby eliminating the fur from the action of said blades and a means for preventing said raised hairs from being inclined sidewise from the center of the skin, thereby making the stubble of the clipped hair of uniform length across the width of the unhaired skin, said preventing means being connected to said outer blade and adapted to move therewith.

7. In a machine for unhairing fur skins an inner blade and an outer blade, combined with a set or sets of combing plates adapted to raise the inclined hairs of the fur skins preliminary to clipping the same and thereby to make the stubble of the clipped hair of uniform length across the width of the unhaired skin, said plates being situated at the front of said outer blade, inclined thereto, and adapted to act in conjunction therewith and in advance of the operation thereof.

8. In a machine for unhairing fur skins an inner blade, an outer blade and a set or sets of combing plates, inclined to said outer blade, and adapted to raise the inclined hairs of the fur skins preliminary to clipping the same and thereby to make the' stubble of the clipped hair of uniform length across the width of the unhaired skin, said plates being situated at the front of said outer blade` combined with a means for regulating the inclination of said plates to said outer blade.

, 9. ln a machine for unhairing,fiurv skins an inner blade, an outer blade and a set Or sets of combing plates, inclined to said outer blade and adapted to raise the inclined hairs of the fur skins preliminari7 to clipping the saine, and thereby to inake the stubble of the clipped hair of uniform length across the Width of the unhaired skin, combined with a carrier for said plates, pivotally connected thereto, said carrier ,being situated at the front of said outer blade and adapted to move therewith, therebjT causing said plates to act iii conjunction with said outer blade,

and a nieans for regulating' the inclination of said plates to said outer blade.:

l0. ln a machine :tor unhairing iur skins an inner blade, an outer blade and two sets of combing plates, inclined to said outer blade and adapted to raise the inclined hairs of the tur skins preliminary to clippin; the saine, thereby making the stubble of the clipped hair or' uniiorni 'length sf the xWidth of the uiihaired skin, .said plates beine; situated at the yiront oit said outer blade and the inclination or" the plates in each set being opposite in direction to that oi the other set.

lll. lin a machine lor' unliairing fur "kiiis an inner blade, an out-er blade, tn'osets :of combingplates inclined to said outer blade and adapted to raise the inclined hairs et the iur skins preliminary*to'clipping the copes of this may oe obtained for iive cents by addressing the omrassioner of lafteirts, y

ol Said fclination of said plates to said outer blade,

according,` to the degree and direction of inclination of the hairs of the fur skins.

l2. ln a means for unhairing fur skins an outer blade and an inner blade for clipping the hairs 'of parts oi the iur skins Where such hairs are located, combined with one or nio're shields for protecting parts of the skin, which are. not to be unhaired, and the fur thereon from being,- cut by said blades,

.said shield or shields being adapted to inove with said inner blade and to be adjusted in posit-ion transverselyv tu the direction oi its inotion. Y

13. ln a machine for unhairing fur skins an outer bladeand an inner blade for clippinar the hairs of the parts of the iur skins where said hairs are located, combined with one or niore shields tor protecting parts of the skin, which are not to be unliaired, and the fur thereon from being eut byv said blades., a carrier plate for each of said shields, a groove onjtlie underside of said innerblade transversely to thedireetion .of its inetion and a tongue von the upper side ko2 .said carrier plate, said tongue beingslidably and detachabl en aired in said Groove 'for d e e i adjusting lthe position vof the shield carried by said plateavith relation to the fur skin, and means orcausing said shield to move with said inner blade.

la. `ln a machine for -unhairing tur skins a bridge bar for stretching the iur .skins theieover, an 4inner blade and an outer blade, a sliding support tor said inner blade and a pair of brackets for said outer blade, said brackets being mounted on said support, said support with said inner blade being adapted to have a reciprocating motion with relation to said bridge, and said outer blade being adapted to revolve on a suitable spindle'supported by said brackets.

@SCAR DlNGFELD.

Washington, D. e. 

